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Tag: "food" at biology news

'Mindless autopilot' drives people to underestimate food decisions

...f Applied Economics at Cornell, observed, "So many food decisions are made on mindless autopilot." The problem with making so many more food decisions than we are aware of, he said, is that "each of these small decisions is a point where a p...

Sandia research to focus on early detection of harmful algal blooms

...The ability to quickly sample organisms low on the food chain, Lane said, can provide an early warning sys...serve as the energy producers at the depths of the food web. The dense patches (or "blooms") that sometimes accumulate near the surface of the water, howeve...

UGA scientists engineer root-knot nematode resistance

... Environmental Sciences. They attack nearly every food and fiber crop grown, about 2,000 plant species in all. The nematode invades plant roots, and by feeding on the roots' cells, they cause the roots to grow large galls, or knots, damaging the crop and reducing its yields. Working with assistant res...

New mechanism explains glucose effect on wakefulness

...state with finely orchestrated changes in arousal, food seeking, hormone release, and metabolic rate, to ensure that the brain always has adequate glucose." Malfunction of orexin neurons can lead to narcolepsy and obesity, and researchers have also found evidence that orexin neurons play a role in learni...

Parasitic plants sniff out hosts

...live without a host is determined by the amount of food stored in the seed, but they can only grow about four inches before they die. "These plants have no roots and barely have leaves and the flowers are very tiny," says Mark C. Mescher, assistant professor of entomology. First the researchers placed ...

Bacterial 'switch gene' regulates how oceans emit sulfur into atmosphere

...he routing of carbon and sulfur into the microbial food web. ...

Eat less, weigh more? Enzyme makes lean mice 'susceptible' to dietary fat

.... Further analysis revealed that when deprived of food for four hours prior to feeding with standard labo...the knockout mutant mice ate about 25 percent less food than their normal siblings. Therefore, the researchers concluded, CPT1c must play a role in feeding...

Plant-cell-produced technologies-cutting edge approach to bringing solutions to the market

...associated with making vaccines in whole plants or food crops are eliminated. The Concert Plant-Cell-Produ...of healthy oils for consumers, agriculture and the food industry. The conference will also explore R&D collaboration under the EU's Seventh Framework Pr...

Iowa State researchers improving plastics made from corn and soy proteins

...r hay bales, pots for plants and packaging for the food industry. Grewell, Kessler, Howard Van Auken, a professor of management, and Gowrishankar Srinivasan, a graduate student in industrial and agricultural technology, are working on the plastics project with two Iowa companies, the Vermeer Manufactu...

Tastes great! Study shows brain's response to pleasing -- and changing -- tastes

...s in everyday human life, when a formerly favorite food becomes less attractive after we have over-indulged in that food. "Moment by moment, this low-level information processing in the brain helps us react to what we like or don't like," he says. "These neurons respond to a taste as pleasurable, or as...

Tamed 11,400 years ago, figs were likely first domesticated crop

...ecided to intervene in nature and supply their own food rather than relying on what was provided by the gods. This shift to a sedentary lifestyle grounded in the growing of wild crops such as barley and wheat marked a dramatic change from 2.5 million years of human history as mobile hunter-gatherers." Th...

Leptin has powerful effect on reward center in the brain

Leptin, a hormone critical for normal food intake and metabolism, exerts a strong effect on a...ble foods. "Interestingly, despite the increase in food intake, these animals did not gain weight, possibly as a result of increased activity that was also ...

Why we could all do with a siesta

...es. "We have pinpointed how glucose ?the sugar in food ?can stop brain cells from producing signals that ...state with finely orchestrated changes in arousal, food seeking, hormone release and metabolic rate to ensure that the brain always has adequate glucose." ...

Tests may help answer questions about GMOs and allergies

...reactions. Venu Gangur, MSU assistant professor of food science and human nutrition, has received a $447,0...f cry9C DNA were detected in taco shells and other food products. "Many people believed that StarLink was responsible for their asthma attacks and other al...

Fire ants: Their true story told by the scientist who loves them

...o encompassed the ecology of arboreal ants (a main food of the endangered red-cockaded woodpecker) and the natural history of the Florida harvester ant ?or "any other species that strikes us as neat," he said. As for the much-maligned fire ant, he points to what he calls a 50-year-old misconception about...

A rice future for Asia

...ned, let alone understand its implications for the food they eat each day." During their five days at IRRI, the students, who will be accompanied by their teachers, will learn about new techniques such as DNA extraction and how to insert a gene into rice as well as more basic information such as how to p...

Surprising symbiosis: Glassy-winged sharpshooter eats with friends

...'s xylem or phloem, pipes that transport water and food within a plant. These sap-feeders are often known to rely on resident bacteria for a balanced diet ?especially the synthesis of the "essential" amino-acids that all animals, including humans, cannot make for themselves. But researchers had assumed th...

Increased sensitivity to nerve signals keeps diabetes at bay

...ssenger acetylcholine before and most likely after food is absorbed. "However, the importance of parasympathetic innervation of pancreatic beta cells in maintaining normal glucose balance had remained controversial," Wess said. "Much of this controversy has arisen because peripheral parasympathetic nerve...

Where have all the butterflies gone?

...as had a very dry "La Nina" winter, leaving little food for the caterpillars of the painted lady. Shapiro said that, as in previous dry winters, the painted lady butterflies had given up on trying to breed in the desert and headed north; a handful were seen in Davis on Feb. 11. Shapiro and his students ha...

Just like us, social stress prompts hamsters to overeat, gain weight

...mon scenario. The study, "Social defeat increases food intake, body mass, and adiposity in Syrian hamster...r and an authority on obesity. In the U.S., where food is plentiful and relatively cheap, overeating can be difficult to control. Stress-related overeating...

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